component

PT4115-MS

Public Made by Adom

by adom

MSKSEMI LED Drivers, SOT89-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs pt4115-ms: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json pt4115-ms: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
pt4115-ms-etched.fit.json pt4115-ms: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
pt4115-ms-etched.glb pt4115-ms: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
pt4115-ms-etched.step pt4115-ms: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
pt4115-ms.glb fix footprint: SOT-89-3 -> SOT-89-5 (pad_count, 5 pins) · Ray
pt4115-ms.kicad_mod fix footprint: SOT-89-3 -> SOT-89-5 (pad_count, 5 pins) · Ray
pt4115-ms.kicad_sym Publish 0.1.0 · Ray
pt4115-ms.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
pt4115-ms.step fix footprint: SOT-89-5 -> SOT-89-5 (3d refresh; body regenerated from the footprint F.Fab outline) · Ray
README.md pt4115-ms: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

PT4115-MS

MSKSEMI · LED Drivers · SOT89-5

PT4115-MS from MSKSEMI, in a SOT89-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 SW output Switching output; drain of the internal high-side power MOSFET (RDS(on) ~450 mΩ). Connect to the LED / inductor node of the buck converter. Rated up to 1.2 A peak (IMAX).
2 VSS power_in Chip ground reference. Connect to system ground.
3 DIM input Brightness / dimming control input. Accepts a PWM signal (up to 20 kHz) or a DC analog level (0.5 V to 2.5 V) to set LED current. Pulling DIM below 0.3 V places the device in shutdown/standby. Internally pulled up (~500 kΩ) to an internal 5 V rail; max pin voltage 6 V.
4 CS input High-side current-sense input. Connects to the low side of the external sense resistor RCS between VIN and CS; the internal comparator regulates LED current so that VIN − VCS ≈ 100 mV (±3%). Input bias current ~10 µA.
5 VIN power_in Supply input, 5.5 V to 30 V (absolute max 35 V). Powers the internal 5 V regulator, control logic, and high-side MOSFET.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SOT89-5
Category LED-drv
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • PT4115-MS

CAD (KiCad official)

  • Symbol: PT4115-MS
  • Footprint: Package_TO_SOT_SMD:SOT-89-5
  • 3D model: SOT89-5 (KiCad packages3D, STEP)
  • 3D model files: pt4115-ms-etched.step / pt4115-ms-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pt4115-ms.step / pt4115-ms.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
pt4115-ms.step 86 KB You want the bare part, or you mark your own boards.
pt4115-ms-etched.step 1.2 MB You want the part with PT4115-MS already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 309 faces against 26 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: MSKSEMI datasheet (12 pp, sha256 bb150976b1f46900, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF